Three vertical steel wires are loaded as shown. At a temperature of 68°F, the bottom ends...

Three vertical steel wires are loaded as shown. At a temperature of 68°F, the bottom ends of the wires were at the same elevation with no load on the bar. A downward load of 500 lb was then centrally applied on the bar and the temperature was increased by 100Fº. What load is carried by each wire assuming the load bar remains horizontal?

Problem